Gin-saw-filing machine.



No. 653,358. Patented m ID, I900.

- J. Armaowlanh GIN SAW FILING MACHINE.

(Application filed Aug. 8, 1899.)

(NI Model.)

IIIII z gwiw 1 K @Wfim UNITED STATES PATENT OFFICE.

JOSEPH ALEXANDREW MCGOWEN, OF GALLION, LOUISIANA.

GIN -SIAW-FIL'ING MACHIN E SZEECIFICATION forming part of Letters PatentNo. 653,358, dated July 10, 1900.

Application filed August 8, 1899.

T0 aZZ whom it may concern.-

Be it known that I, JOSEPH ALEXANDREW MCGOWEN, a citizen'of theUnited'States, residing at .Gallion', in the parish of Morehouse andState of Louisiana, have invented certain new and useful Improvements inGin-Saw Filing Machines, of which the following is a specification.

My invention relates to that class of filingmachines known asgin-saw-filing ma chines; and the object of the invention is to providea machine'which will be simple in construction and adapted to thoroughlyand expeditiously file the teeth of the saw and otherwise serve thepurposes for which it is intended.

With this end in View the invention consists in the novel constructionand'combination of parts, as will be hereinafter more indetaildescribed, illustrated in the drawings, and particularly pointedout in the claim.

In the accompanying drawings, to which reference is had and which fullyillustrate my invention, Figure 1 is a top or plan view of the device,showing thecap or cover supporting the'ratchet mechanism removed. Fig. 2is aside elevation of the same complete, and Figs. 3, 4, 5, 6, and 7 aredetail views thereof. Fig. 8 is a planet the machine detached from itsframe. I I

A designates a rectangular bed-piece upon which is carried the operatingmechanism or my device, the said bed-piece being'in turn supported upontrestle-benches u and trans-. versely-arranged seat-piece T at one endandis held rigidly in place by'means'of guide- I clamps X and anadjustable set-screw w, and

at its opposite end it has secured to it a spring bifurcated bar W,which supports this end and straddles a saw upon the arbor and restsupon the arbor, so as to put the files in' line with the teeth on saidsaw or cylinder, one end' each of the trestle-benches being mortised toeach end of the seat-piece, the opp0- site ends of these trestle-benchessupporting a shaft T, which is journaledin bearings 15 15, carrying asaw V, provided with tangentiallyarranged teeth 1;. Uponthis'bed-fpie'ce A are centrally mounted and rigidly securedat theirlower ends standards B B B B the heights of the standards B B being thesame andrar-.

Serial No. 726,610. (NomodeL) ranged upon opposite sides of thebed-piece A and parallel to each other, while the standards B B are ofdifferent heights, 13 being somewhat higher than E the latter beingsecured at its lower end to one side and near the'rear end of thebed-piece. Secured to the tops of the standards B B B is an inclined barH, slotted, as at h, at one end, and is provided with a pin 2', the slotin the barH traversing the pin 2' and by which the length of the bar His regulated, and at its opposite end is secured a plateM,'the underside of which is in the form of an inverted pyramid and sharpened uponits edges, the said plate pass ing between the saw-teeth and placing thesaw in position for the next tooth to comein contact with the files. Thebar H is connected to an inclined supp'ort h through the medium of thelink h perforated link I, and lever S, the lever S being pivotallysecured to the forward end of a block secured to the rear end of thepart h and passed through'and working in a slot in the part and having aslots in its upper end at one side, within which plays the outer end ofthe link I, and interposed between the link I and inclined p art h is aspring I, secured at one end to the part h, its free end bearing uponthe underside of the link I, having a slot 2" therein, which is inalinement with the slot 1' in the'link I and through which is passed aset-screw K. The set-screw K is also passed into the part h, whereby thestroke of the bar H is regulated, the bar H, link If, link I, springI,"set-screw K, and lever S constituting the feeding .mechanisin,

said' mechanism being raised or lowered, as

desired, by means of the set-screw K. The lower end of the lever S isbifurcated and engages a pin in a reciprocating bar E, to which thefile-carriers to be hereinafter described are secured. The inclined barH is projected beyond the bed-piece, and the plate upon the free endthereof engages the teeth of the cylinder.'

E designates a reciprocating operating-bar which is passed through andworksin guides b b, secured upon the inner sides of the standards B Bclearly shown in Fig. 1 of the drawings, said bar being pivotallyconnected to the lower end of the lever S by means of a pin .3 in 'aslot or bifurcation 8 said pin 8- traversing the bifurcation o'r slot inthe movement imparted to the device.

F F designate a pair of springs secured to the forward end of theoperating-bar E by means of screws f, said springs being placed parallelwith each other with their fiat sides together and held in position bymeans of a sliding collar B being passed over the springs, the functionof which is to regulate the pressure of the files against the teeth ofthe saw or cylinder. The opposite ends of these springs are secured in asimilar manner to a pair of file-carriers G and which are capable ofbeing set at an upward angle, thus allowin g the files to come incontact with the upper side of the tooth only, leaving the side smooththat comes in contact with the lint, and to the inner edges of thecarriers are secured a pair of files g, which do not cross each other,but operate one above the other and each on the side next to it, theupper carrier of which has a perforation g therein, through which ispassed a set-screw, (not shown in the drawings,) the end of the screwresting against the lower carrier for spacing and adjusting the carriersrelative to each other, the construction of the springs and carriersresembling in form apair of sheep-shears. (More clearly shown in Fig. 3of the drawings.)

0 O designate a double-crank shaft secured in bearings 0 0 to theforward edges of the standards B B, and connected to said double-crankshaft is one end of a link N, the opposite end of said link beingconnected to the lever S, and upon this double-crank shaft is mounted afly-wheel D, by means of the revolution of which motion is imparted tothe device.

From the foregoing description, taken in connection with the annexeddrawings, the operation of my device will be obvious; but it may berehearsed as follows: The operator upon turning the crank of the machineputs in motion the fly-wheel thereon, which in turn imparts motion tothe feeding mechanism and duplex files simultaneously, care being takenthat the files are straight with the teeth, so that they will file frompoint to throat, the forward motion of the crank bringing the files incontact with the teeth of the saws, and as the fiy-wheel continues itsrevolutions the files are drawn backward and forces the bar H forward,to the front end of which an adjustable steel plate is secured whichpasses between the teeth, separating them and revolving the sawssufficiently to bring the next tooth in position for the files as theypass forward on the further turning of the crank, and should the bottomfile cut the top of the tooth faster than the file in the top carrierslack the adjustable screw in the wide end of the top carrier until bothfiles cut the same, and if the top file cuts faster tighten the screw,and if the files cut the point of the tooth too fast slacken the leftnut in the under side of the bifurcated bar and tighten the oppositenut, and if the files cut the tooth at the point on the under sidereverse on the nuts. These nuts govern the pitch of the tooth as the barworks on a pivot. Do not file to a perfect point, as the tooth willbend, and the pressure of the files against the teeth is regulated by asliding collar, the files operating one above the other and each on theside of the tooth next to it, the file-carriers being spaced by theset-screw passing through the upper one and resting against the lowerfilecarrier. The function of this sliding collar is also to keep thepressure from crumpling the cutting edges of the files as they wear, thecollar being moved out on the springs to keep the files cutting thesame. The machine is so adjusted that a forward motion of the crankfiles the tooth and that as the crank turns over the files are drawnback and the ratchet mechanism revolves the saw or cylinder with perfectuniformity, both working on the same crank and nicely balanced by thefly-wheel. The filing of the under side of the tooth is avoided byadjusting the file-carriers by means of screws at the forward ends ofthe springs, giving the carriers an upward angle. The cylinder is turnedin such amanner as to get a downward motion of the files to file the topof the tooth and not the bottom, which allows the cotton to slip readilyinto the throat of the teeth, forcing the gin to take the lint from theseed and at the same time will not cut or nap the lint, thus saving itin a perfect state and also saving the files. When the ratchet islowered, if the cylinder rotates from the force of the files tighten thebearings or cylinderjournal until the files have no effect on thecylinder, and if the plate on the bar H moves back over more than onetooth at a time tighten down the thumb-screw, which shortens the stroke,and if it does not move over one tooth slacken this screw. This screwgoverns the stroke of the bar H, and if the plate does not fit in thetooth take up or let out by tightening or slacking set-screw, whichfastens bar H and its rear link as it may need to make the plate fit theteeth. Do not tighten the bearings so tight as to slip the teeth off thesaws, and if the files do not out the topof the teeth and leave thebottom smooth set the file-carriers alittle more up at the small ends,as they should have a downward movement as they perform their stroke onthe saws.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination with the trestles u, and T, bed-piece A, secured to thetransverse piece T, clamp X, adjustable thumb-screw a, bifurcated bar W,ratchet mechanism consisting of the adjustable slotted ratchet-bar I-I,provided with the inverted pyramidal plate M, pin 2', link 72 slottedlink I, spring I, lever S, set-screw K, cap or cover h, and its rearblock secured thereto; of the reciprocating bar E, standards B, B, B Bsprings F, shaft to the ratchet-lever S, and fly-wheel provided with thecollar R, secured to the bar mounted upon the crank-shaft, substantiallyE, adjustable file-carriers G, G, secured to as and for the purpose setforth.

the springs F, F, one of which is provided JOSEPH ALEXANDREW MGGOWEN.with the perforation g, files g, secured to the Witnesses: carriers,double-crank shaft journaled in the FRANK BRODNAX,

standards B, B link N, connecting crank- R. O. HOLT, Jr.

